If you have created a new account, or just logged into your Linux Distribution you may not be able to use the sudo command. This is because the account is not in the sudoers file. I am going to go over how you can add a user to the sudoers file, either by using the usermod command, or by manually editing the sudoers file.
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The options you mean are arbitrary. You can use any group name you want for sudo privilage, or just directly add the user(i use wheel group personaly). Also if you are interested you can look at doas which is like sudo but a simpler config file.
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